Our English teacher told us to find out ____ the differences between American English and British English lie.

A．where

B．how

C．what

D．which

在淋球菌分离培养时，为了抑制杂菌生长，提高检出率，常选用的培养基是（）。

A.TM培养基

B.麦康凯琼脂

C.巧克力血平板

D.SS琼脂

E.血平板